Dynamic Replication Management Mechanism Based on Accessing Frequency Detecting

Abstract

This paper describes replication management policies in distributed file system, and shows a decentralized dynamic replication management mechanism dependent on accessing frequency detecting named FDRM (Frequency Detecting Replication Management). In FDRM, in order to support better system performance and decrease network traffic, system nodes scan their local replicas to monitor replicas’ access pattern, and makes decision independently to add, delete or migrate replicas. In addition, the scanning interval of a replica is variable according to the accessing frequency to that replica, which makes FDRM more sensitive to the change of system behaviors, so that one can receive better performance with less system overhead.